<?php
if(isset($_GET['trefwoord'])) {
	$value = $_GET['trefwoord'];
} else {
	$value = 'Datum';
}
?>
<h1>Zoek rond Datum</h1>
<form action="index.php" method="get">
	<input type="hidden" name="id" value="zoekresult" />
	<input type="hidden" name="type" value="student" />
	<p><input name="trefwoord" value="<?php echo $value; ?>" /><br>('JJJJ-MM-DD' formaat)</p>
	<p><input class="fixed" type="submit" value="Zoeken" class="submit" /></p>
</form>